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Sensors 2008, 8(3), 1858-1871; doi:10.3390/s8031858

An Approach for Measuring the Sorptive Behavior of Odorants Using a Multifunction Thermal Desorber Unit: Preliminary Tests on Reduced Sulfur Compounds

1,* , 2, 3 and 3
1 Atmospheric Environment Laboratory, Department of Earth & Environmental Sciences, Sejong University, Seoul, 143-747 Korea; Siheung Environmental Technology Development Center, Siheung, 429-793 Korea 2 Sam Sung Electronics, Young Tong Goo, Suwon, 443-742 Korea 3 Department of Chemistry, Soongsil University, Seoul 156-743, Korea
* Author to whom correspondence should be addressed.
Received: 2 January 2008 / Accepted: 14 March 2008 / Published: 7 March 2008
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In this study, the sorptive behavior of reduced sulfur compounds (RSC) was investigated using a combination of thermal desorber (TD) unit and gas chromatography (GC). To examine the sorptive properties of RSC on textile materials, two types of experiments were conducted under experimental conditions favorable for sorptive processes. In all the experiments, gaseous standards of hydrogen sulfide, methanethiol, dimethyl sulfide, and dimethyl disulfide were supplied to initiate the adsorption processes on textile pieces. The textile pieces were then forced to release those adsorbed RSC under a fixed condition. It was found that the extent of adsorption, if evaluated quantitatively, occurred at approximately 1/1000 to 1/100 of the level of RSC standards supplied originally to induce adsorption. It also indicated that RSC adsorption was affected very sensitively by the initial exposure durations to induce RSC adsorption with an exponential decrease in relative recovery (RR) values with increasing exposure time. The relative sorptive patterns, when compared between different RSCs, were affected most sensitively by such factors as molecular weight and/or physical contact conditions.
Keywords: GC; odorant; adsorption; desorption; relative recovery GC; odorant; adsorption; desorption; relative recovery
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Kim, K.-H.; Choi, Y.-J.; Yang, H.-S.; Joo, S.-W. An Approach for Measuring the Sorptive Behavior of Odorants Using a Multifunction Thermal Desorber Unit: Preliminary Tests on Reduced Sulfur Compounds. Sensors 2008, 8, 1858-1871.

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